%0 Journal Article %A M. O. Jnaid %A N. A. Ruževich %A V. M. Shurenkov %T Potentials of Ergodic Chains, Semi-Markov Processes and Sums of Non-Negative Variables %J Teoriâ veroâtnostej i ee primeneniâ %D 1988 %P 545-559 %V 33 %N 3 %U http://geodesic.mathdoc.fr/item/TVP_1988_33_3_a8/ %G ru %F TVP_1988_33_3_a8